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Kenwood TK-2402(V) User Manual

Kenwood TK-2402(V)
46 pages
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SERVICE MANUAL
This product complies with the RoHS directive for the European market. This product uses Lead Free solder.
© 2012-11 PRINTED IN JA PAN
B53-7040-00
(
Y
)
669
VHF FM TRANSCEIVER
TK-2402(V)/2402
CONTENTS
GENERAL ....................................................2
SYSTEM SET-UP .........................................3
REALIGNMENT ...........................................3
DISASSEMBLY FOR REPAIR .....................6
CIRCUIT DESCRIPTION .............................9
SEMICONDUCTOR DATA .........................14
COMPONENTS DESCRIPTION ................15
PARTS LIST ...............................................16
EXPLODED VIEW ......................................22
PACKING ...................................................23
ADJUSTMENT ...........................................25
PC BOARD
TX-RX UNIT (X57-8310-10) ....................30
SCHEMATIC DIAGRAM ............................34
BLOCK DIAGRAM .....................................38
LEVEL DIAGRAM ......................................40
SPECIFICATIONS ......................................41
Helical antenna
(T90-1036-15) : TK-2402(V)
TK-2402
Button knob
(SIDE1/SIDE2)
(K29-9613-03)
Knob (Selector)
(K29-9615-03)
Knob (Volume)
(K29-9614-03)
Plastic cabinet assy
(A02-4200-03)
Button knob (PTT)
(K29-9612-03)
TK-2406/2407
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Kenwood TK-2402(V) Specifications

General IconGeneral
Channels16
IP RatingIP54
Frequency Range136-174 MHz
Power Output5W
Operating Temperature-30°C to +60°C
Channel Spacing12.5/25 kHz

Summary

VHF FM Transceiver Service Manual

General Information and Safety

Manual Scope and Parts Ordering

Defines manual's purpose and how to order replacement parts.

Personal Safety Precautions

Essential safety guidelines for operating and servicing the equipment.

Service Guidelines

Guidance on servicing procedures and component identification.

System Setup and Realignment

System Setup Procedure

Steps for initial setup and programming of the transceiver.

Operating Modes Explained

Instructions on how to access different operational modes.

PC Mode Configuration

Details on connecting and configuring the transceiver for PC communication.

Wireless Clone Mode Operation

Wireless Cloning Overview

Explanation of the wireless data transfer capability.

Wireless Cloning Procedure

Step-by-step guide for cloning transceiver data wirelessly.

Disassembly for Repair

Case and Holder Assembly Removal

Instructions for disassembling the main chassis, case, and holder.

TX-RX Unit and Battery Lever Removal

Steps to detach the TX-RX unit and remove the battery release lever.

Circuit Description - Frequency and Receiver

Frequency Configuration

Description of the transceiver's frequency generation and PLL circuit.

Receiver System Overview

Explanation of the receiver signal path and key components.

Circuit Description - IF, Audio, Transmitter

IF, Audio Amplifier Circuits

Details on intermediate frequency amplification and audio signal processing.

Transmitter System Overview

Description of the transmitter signal path, microphone, and audio processing.

Circuit Description - Synthesizer and Control

Amplifier and Control Circuits

Explanation of power amplification stages, APC, and control circuitry.

Frequency Synthesizer Unit

Description of the TCXO, VCO, and PLL-IC for frequency generation.

Control Circuitry

Overview of the MCU and its peripheral circuits for transceiver control.

Circuit Description - Signaling and Memory

Frequency Shift, Memory, Low Battery, Key Input

Functions related to frequency shift, memory, battery status, and key inputs.

Signaling Circuitry (Encode/Decode)

Details on QT, DQT, DTMF, MSK encoding and decoding.

Power Supply Circuit Details

Power Supply Voltage Distribution

Description of various voltage rails and their sources within the transceiver.

Semiconductor Data - MCU

MCU Pin Functions

Detailed pinout and function description for the microcontroller.

Components Description - TX-RX Unit

TX-RX Unit Components List

List and description of components found on the TX-RX unit.

Parts List

Model Specific Parts

List of parts specific to different transceiver models.

TX-RX Unit Parts Breakdown

Detailed parts list for the TX-RX unit with part numbers.

Exploded View

Main Unit Exploded Diagram

Diagram showing the exploded assembly of the transceiver unit.

Packing Procedure - TK-2402/2406

Packing Contents TK-2402/2406

List of items included in the packing for specific models.

Packing Procedure - TK-2407

Packing Contents TK-2407

List of items included in the packing for the TK-2407 model.

Adjustment Procedures

Test Equipment and Setup

List of test equipment and initial setup for transceiver alignment.

Connectors and Jigs

Information on antenna adapters and specialized repair/battery jigs.

Adjustment - Frequency and Signaling

Frequency and Signaling Settings

Table of frequencies and signaling types used for adjustment.

Tuning Preparation

Pre-tuning requirements including power supply and dummy load setup.

Adjustment - Transmitter Section

Frequency and Power Adjustment

Procedures for adjusting transmitter frequency and output power levels.

DQT, QT, Deviation Tuning

Steps for tuning DQT, QT, and deviation parameters.

Adjustment - Receiver Section

Receiver Sensitivity Adjustment

Procedure for semi-automatic adjustment of receiver sensitivity.

PC Board Layout - Component Side

TX-RX Unit Component View

Diagram showing the component layout on the TX-RX unit's front side.

PC Board Layout - Foil Side

TX-RX Unit Foil View

Diagram showing the circuit trace layout on the TX-RX unit's foil side.

Schematic Diagrams

TX-RX Unit Schematic

Detailed electrical schematic for the TX-RX unit.

Block Diagrams

TX-RX Unit Block Diagram

High-level functional block diagram of the TX-RX unit.

Level Diagrams

Receiver Section Level Diagram

Signal level chart for the receiver signal path.

Transmitter Section Level Diagram

Signal level chart for the transmitter signal path.

Technical Specifications

General Specifications

Overall operating parameters including frequency, voltage, and dimensions.

Receiver Specifications

Detailed performance metrics for the receiver section.

Transmitter Specifications

Detailed performance metrics for the transmitter section.

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